<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="../js/jquery-3.7.1.js"></script>
</head>
<body>
    <a href="" id="test-jquery">点我</a>


    <script>
        $('#test-jquery').click(function(){
            alert('hello, jQuery');
        })
    </script>
</body>
</html>